Observed arrival · 2026-09-03
Metal Detector for iPhone, Without the Treasure-Hunting Fiction
A calibrated iPhone instrument that watches for nearby magnetic-field changes and compares them with a local baseline.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The proposed instrument captures a local magnetic baseline, then asks the user to move the same iPhone slowly around an object and compare the change. Its example readout shows a 47.2 µT baseline, a +38.4 µT change, and updates at 15 readings per second. The page distinguishes materials likely to affect a phone magnetometer from metals it cannot reliably identify, and says raw readings, baselines, scan history, and completed values stay on the device.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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